Dumb devices work as expected for at least 20 years and then you replace them.
Smart devices work as expected for a year, fail in new and exciting ways, and then you replace them with dumb devices.
Smart devices work as expected for a year, fail in new and exciting ways, and then you replace them with dumb devices.
There's also a pelton-wheel turbine generator in the basement from before there was mains electricity which most likely would still work with a bit of a cleanup and oil.
There's not a single "smart" anything in the whole house. Things just work.
We put everything in pipes in the Netherlands. If you don't bend them in absurd corners and properly fasten them one can also replace the wires and switches without opening up the wall.
Then came the flimsy IoT wanting to be part of the installation but it should really be a disposable plug and play component that is easy to replace like a lightbulb.
It should use switching wires where possible, Ethernet as a second choice, then Bluetooth and finally wifi if non of the above satisfy the req.
For renovation you often have no choice but new houses entirely depending on wifi and flimsy IoT seems only worth it if it really saves a lot of money.